stealc | 991a25e32c89c28be6b8f5c843bc61da725c97720ddf27d8c85dffb40675ce2f

Virtualization/Sandbox Evasion

credential_access stealer

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe

Uses browser remote debugging 2 TTPs 4 IoCs

Can be used control the browser and steal sensitive information such as credentials and session cookies.

Steal Web Session Cookie

T1539

Modify Authentication Process

pid	Process
2468	chrome.exe
2656	chrome.exe
1476	chrome.exe
2700	chrome.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	file.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	file.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2256	file.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2768	2256	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2256	file.exe
2256	file.exe
2256	file.exe
2656	chrome.exe
2656	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe
Token: SeShutdownPrivilege	2656	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe
2656	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2656	2256	file.exe	30
PID 2256 wrote to memory of 2656	2256	file.exe	30
PID 2256 wrote to memory of 2656	2256	file.exe	30
PID 2256 wrote to memory of 2656	2256	file.exe	30
PID 2656 wrote to memory of 2000	2656	chrome.exe	31
PID 2656 wrote to memory of 2000	2656	chrome.exe	31
PID 2656 wrote to memory of 2000	2656	chrome.exe	31
PID 2656 wrote to memory of 2252	2656	chrome.exe	33
PID 2656 wrote to memory of 2252	2656	chrome.exe	33
PID 2656 wrote to memory of 2252	2656	chrome.exe	33
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 1984	2656	chrome.exe	35
PID 2656 wrote to memory of 2856	2656	chrome.exe	36
PID 2656 wrote to memory of 2856	2656	chrome.exe	36
PID 2656 wrote to memory of 2856	2656	chrome.exe	36
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37
PID 2656 wrote to memory of 680	2656	chrome.exe	37

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe" --remote-debugging-port=9229 --profile-directory="Default"
  2⤵
  - Uses browser remote debugging
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6cf9758,0x7fef6cf9768,0x7fef6cf9778
    3⤵
    PID:2000
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2252
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1088 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:2
    3⤵
    PID:1984
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1488 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:8
    3⤵
    PID:2856
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1600 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:8
    3⤵
    PID:680
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --remote-debugging-port=9229 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2268 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:1
    3⤵
    - Uses browser remote debugging
    PID:1476
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --remote-debugging-port=9229 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2164 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:1
    3⤵
    - Uses browser remote debugging
    PID:2700
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1328 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:2
    3⤵
    PID:848
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --remote-debugging-port=9229 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1172 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:1
    3⤵
    - Uses browser remote debugging
    PID:2468
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=1180 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:8
    3⤵
    PID:704
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3596 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:8
    3⤵
    PID:1960
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3724 --field-trial-handle=1336,i,15536332516918579669,4825515450058151312,131072 /prefetch:8
    3⤵
    PID:2072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 912
  2⤵
  - Program crash
  PID:2768

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:2012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Modify Authentication Process

Privilege Escalation

Defense Evasion

Modify Authentication Process

Virtualization/Sandbox Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Modify Authentication Process

Steal Web Session Cookie

T1539

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion